2 problems

[Igrishin Dmitry <igrish_(_at_)_vttc_(_dot_)_donpac_(_dot_)_ru>]

Dear ALL

First of all please sorry for my bad english.
My system is - OpenBSD 2.8-stable/i386/Celeron 300A/128Mb RAM.

I have 2 problems:
1. Today I am tryed to mount my CDROM (ACER 40X) connected as
Secondary Slave by giving mount_cd9660 /dev/cd0a /mnt/cdrom
command. Its returns error: Input/Output error on my root terminal and
error: pciide0:1:1: PIOMODE error (0x4) on my system console.
Last week I have dumped my / wd0a to /altroot wd0o. When I typed
# mount_cd9660 /altroot/dev/cd0a /mnt/cdrom
my CDROM was successfuly mounted.
Then I type
# umount /mnt/cdrom && mount_cd9660 /dev/cd0a /mnt/cdrom
and my CDROM was successfuly mounted.
What is this and how to fix it?

2. I have mounted the VideoCD on /mnt/cdrom and tryed to
copy some files from it:
% cp /mnt/cdrom/MPEGAV/AVSEQ01.DAT .
cp: /mnt/cdrom/MPEGAV/AVSEQ?.DAT: Invalid argument
on my user terminal and:

cd0(atapiscsi0:1:0): Check Condition on opcode 28
         SENSE KEY: Illegal Request
          ASC/ASCQ: Illegal Mode For This Track
on my system console.

Other files from the same VideoCD can be successfuly
copyed and readed.

Please help. Thank you

Regards, Igrishin Dmitry